AS51257 CERIZ SASU 🇫🇷 FR
Announcing 3 prefixes, seen at the RIS collectors.
IPv4 prefixes
1
256 (1 × /24)
IPv6 prefixes
2
8 × /32
Upstreams
1
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS51257
- Name
- CERIZ SASU
- Organisation
- CERIZ SASU
- Country
- 🇫🇷 FR
- RIR
- RIPENCC
- Allocated
- 2016-01-05
- Network type
- Enterprise
- Traffic levels
- 100-1000Mbps
- Scope
- Regional
- Peering policy
- Open
- IRR as-set
- AS-CERIZ
- Website
- http://www.ceriz.fr
- PeeringDB
- net/12934
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
3 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 171.22.146.0/24 v4 | RPKI valid | 42 | 345492907551257 | 2026-09-18 |
| 2a05:d80::/29 v6 | RPKI valid | 38 | 345492907551257 | 2026-09-18 |
| 2a05:d80:4000::/48 v6 | RPKI valid | 35 | 345492907551257 | 2026-09-18 |